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steposvetlana [31]
3 years ago
9

I need help with this am completely lost

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0

Angle DOC is a vertical angle to AOB. Since this is a central angle, arc AB is 50.

Angles AOE, EOD, and DOC are supplementary. 180 - 60 - 50 = 70. Angle AOE is also central, so arc AE is 70.

All arcs combined add to 360, so 360 - 70 - 50 = 240 (we subtracted every other arc besides ECB, which is 240.)

We know angle BOC is vertical to the sum of AOE and EOD, so 60+ 70 = 130. Angle BOC is 130.

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What is the GCF of 14 and 21
n200080 [17]
Hey there the answer is, 

<span>The Greates Common Factor (GCF) is:   7
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8 0
3 years ago
Consider this system of equations. Which shows the second equation written in slope-intercept form? y = 3 x minus 2. 10 (x + thr
Arte-miy333 [17]

Question

Consider this system of equations. Which shows the second equation written in slope-intercept form?

y = 3x - 2.

10(x + \frac{3}{5} ) = 2y

A. y = 5x + \frac{3}{10}

B. y = 5x + 3

C. y = \frac{1}{5} x + \frac{3}{25}

D. y = \frac{1}{2} x + 6

Answer:

B. y = 5x + 3

Step-by-step explanation:

Given

Equation 1: y = 3x - 2.

Equation 2: 10(x + \frac{3}{5} ) = 2y

Required:

Equivalent of equation 2

To get an equivalent of equation 2 (in slope intercept form), first we have to simplify equation 2

10(x + \frac{3}{5} ) = 2y

Open the bracket

10*x + 10 *\frac{3}{5} = 2y

10x + \frac{30}{5} = 2y

Simplify fraction

10x + 6 = 2y

Divide through by 2

\frac{10x}{2}  + \frac{6}{2} = \frac{2y}{2}

5x + 3 = y

Re-arrange

y = 5x + 3

The next step is to compare each of option A through D with y = 5x + 3

A.

y = 5x + \frac{3}{10} is not equal to y = 5x + 3

We check the next available option

B.

y = 5x + 3 is equal to y = 5x + 3

This option is equivalent to the second equation in slope-intercept form.

We check further if there are more equivalent options

C.

y = \frac{1}{5} x + \frac{3}{25}

Convert fraction to decimal

y = 0.2x + 0.12

This is not equal to y = 5x + 3

D.

y = \frac{1}{2} x + 6

Convert fraction to decimal

y = 0.5x + 6

This is not equal to y = 5x + 3

Hence, the only equation that is equivalent to the second equation written in slope intercept form is Option B

7 0
3 years ago
Read 2 more answers
A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test.
Verdich [7]

 the first option is the answer

Step-by-step explanation:

4c + 6a <= 120 [building hours]

4c + 4a <= 100 [testing hours]

4 * 20 + 6 * 6 <= 120

80 + 36 <= 120

116 <= 120

true, they have enough building hours

4 * 20 + 4 * 6 <= 100

80 + 24 <= 100

104 <= 100

false, they won't have enough testing hours

the first option is the answer

3 0
3 years ago
A rectangular garden is 20 ft longer than it is wide. Its area is 800 ft 2 . What are its dimensions?
EleoNora [17]
Our equation for the area of a rectangle is l x w = A (length times width equals area)
We know that l=w+20 so we can plug this into our equation.
It is now, (w+20) x w =800
We can then solve for w
w^2 +20w =800
We can subtract 800 on each side to get
w^2 +20w - 800 =0
We then factor to get
(w-20)(w+40)=0
This gives us w =20 and w = -40
Width cannot be negative so our width will be 20 feet
Since our length is 20 more than this, then our length will be 40feet
So the dimensions of the rectangle are 20 ft wide by 40 ft long
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avanturin [10]
R + g + b = 50
r = b + 6
g = b - 4

(b + 6) + (b - 4) + b = 50
3b + 2 = 50
3b = 50 - 2
3b = 48
b = 48/3
b = 16 <=== 16 blue marbles

r = b + 6
r = 16 + 6
r = 22 <=== 22 red marbles

g = b - 4
g = 16 - 4
g = 12 <=== 12 green marbles
5 0
3 years ago
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